Tian Hui, vice president of Qilu Hospital of Shandong University and chief physician of thoracic surgery, manipulates the Da Vinci system during a surgery in Jinan, east China's Shandong Province, July 27, 2020. A Da Vinci surgical robotic system is put in use in the Qilu Hospital of Shandong University. The system is characterized by less trauma and more accurate treatment.Photo:Xinhua

Doctors use the Da Vinci system during a surgery at the Qilu Hospital of Shandong University in Jinan, east China's Shandong Province, July 27, 2020. A Da Vinci surgical robotic system is put in use in the Qilu Hospital of Shandong University. The system is characterized by less trauma and more accurate treatment.Photo:Xinhua

Doctors use the Da Vinci system during a surgery at the Qilu Hospital of Shandong University in Jinan, east China's Shandong Province, July 27, 2020. A Da Vinci surgical robotic system is put in use in the Qilu Hospital of Shandong University. The system is characterized by less trauma and more accurate treatment.Photo:Xinhua

Tian Hui, vice president of Qilu Hospital of Shandong University and chief physician of thoracic surgery, manipulates the Da Vinci system during a surgery in Jinan, east China's Shandong Province, July 27, 2020. A Da Vinci surgical robotic system is put in use in the Qilu Hospital of Shandong University. The system is characterized by less trauma and more accurate treatment.Photo:Xinhua